2116579 has 2 divisors, whose sum is σ = 2116580. Its totient is φ = 2116578.

The previous prime is 2116577. The next prime is 2116591. The reversal of 2116579 is 9756112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2116579 - 2¹ = 2116577 is a prime.

Together with 2116577, it forms a pair of twin primes.

2116579 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2116579.

It is not a weakly prime, because it can be changed into another prime (2116571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058289 + 1058290.

It is an arithmetic number, because the mean of its divisors is an integer number (1058290).

2^2116579 is an apocalyptic number.

2116579 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116579 is an equidigital number, since it uses as much as digits as its factorization.

2116579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 31.

The square root of 2116579 is about 1454.8467273222. The cubic root of 2116579 is about 128.3940291216.

The spelling of 2116579 in words is "two million, one hundred sixteen thousand, five hundred seventy-nine".